When Do Working Women Turn Left? Parties’ Labour Policies Make the Difference

Why This Question Matters

Political scientists have long argued that working women are more likely than men to support left-wing parties because they favor the welfare state. Gonzalo Di Landro asks a related but underexplored question: do party positions on gender equality in the labour market shape the size of the gender voting gap? The answer matters for understanding whether changes in women’s economic status alone drive voting shifts, or whether party strategy and policy signals condition that effect.

What the Study Looks At

Di Landro analyzes three decades of public opinion data from sixteen Western democracies to test whether increases in women’s labour force participation change the female-to-male support ratio for left parties — and crucially, whether that relationship depends on how strongly parties endorse gender-egalitarian labour-market policies.

How the Analysis Works

• Uses repeated cross-national public opinion surveys spanning about thirty years and 16 countries.
• Employs statistical models that compare female-to-male support for left parties over time and across contexts, interacting changes in women’s labour force participation with measures of party support for gender-egalitarian labour policies.
• Focuses on variation in party behaviour (policy positions) rather than treating voter preferences as the only source of the gender gap.

Key Findings

• Rising women’s labour force participation is linked to a larger female-to-male vote advantage for left parties.
• This association emerges only in settings where left parties strongly endorse gender-egalitarian policies in the labour market; when parties do not signal such commitments, increases in labour force participation do not reliably translate into a larger gender gap for the left.
• The results indicate that party strategy and policy positioning condition how social and economic changes affect vote choice by gender.

What This Means for Scholarship and Politics

Di Landro’s evidence refines the standard account that working women naturally drift left because of welfare preferences: party behaviour matters. Changes in women’s labour-market status create a political opening only when parties make credible gender-equality commitments. For scholars, the study elevates party positions as a necessary piece of the puzzle in explanations of the gender voting gap; for practitioners, it highlights how policy signals can shape which social groups are mobilized or persuaded.